Shuttle-checking mechanism for looms.



No. 705,911. Patentedluly 29, 1902.-

v c. H. DBAPER. SHUTTLE CHECKING MECHANISM FOR LOOMS.

(Application filedjDec. 23, 1901.)

(No Model.)

pzrsws no. PHOYO-LITHQ, WASHINGT nmmlmmlllmmnr UNITED STAT PATENT OFFICE.

CLARE 1-1. DRAPER, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

SHUTTLE-CHECKI G MECHANISM FOR, ooms.

SPECIFICATION forming part of Letters Patent No; 705,911, dated July 29, 1902.

Application filed December 23, 1901. Serial No. 86j880. (No model.)

To all whom it may concern:

Be it knownthat I, CLARE H. DRAPER, a citizen of the United States, residing at Hopedale, in the county of Worcester and State of Massachusetts, have invented an Improvement in Shuttle Checking Mechanism for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention has for its objectthe production of a novel and effective shuttle-checking mechanism for looms whereby the force with which the checking or binding of the shuttle is efiected-is automatically adjusted in accordance with the speed of the shuttle entering the shuttle-box. I

In the present embodiment of my invention the force with which the final binding acts upon the shuttle is determined and adjusted just before the shuttle is acted upon by the final binding device.

Various novel features of myinvention will be hereinafter described, and particularly pointed out in the following claims.

Figure 1 is a top or plan view of one end of the lay of a loom with a shuttle-box with one embodiment of my invention applied thereto, the parts being in readiness for the entrance of the shuttle into the box. Fig. 2 is a rear elevation of the mechanism Shown in Fig. 1. Fig.3 is an enlarged plan view of the checking mechanism in operative position, the shuttle being shown at the end of its throw, the top of the shuttle-box and the picker being omitted. Fig. 4: is an inner side elevation of one of the binder members detached. Fig. 5 is a side elevation of the other binder member viewed from the back of the lay; and Fig. 6 is a detail of the fulcrum for the checking members to be referred to, taken on the broken line 6, Fig. 3.

The lay A, longitudinally slotted at a for the picker-stick P, the lay-sword, A protector rock-Shaft H, Fig. 2, its controllingspring H and upturned finger h the front wall B of the shuttle-box,the back plate B, and

cover-plate B Figs. 1 and 2, may be and are of usual or well-known construction, the back plate having near its outer end a rearwardlyextended shelf 1), while the co ver-plate is provided with a depending stud b to be referred to, said stud having an enlarged lower end, as b", Fig; 2. A long bolt 5 passes through the outer end of the cover-plate and the lay, and between the top of the latter and the under side of the cover-plate a hub csurrounds said bolt eccentrically (see Fig. 6) and having an annular base 0', provided with a radial hole 0 the hub being rigidly held between the cover-plate and the lay when the nut is set up on the bolt, a Sleeve 0 loosely surrounding the hub.

The shuttle-checking' mechanism comprises two binder members D and E, shown separately in Figs. 4. and'5, respectively, and arranged in tandem, as it were, the member D being preferably made of wood and having at its outer end adjacent its upper edge a forwardly extended projection d, having an opening d to receive the hub c and its sleeve, and atits inner end recessed to leave a tongue d, extended toward the inner end of the shuttle-box. A notch d is made in the lower portion of the member D, and its inner end is reduced in depth, as at 01 Fig. 4, to slide upon the shelf '6. As shown best in Figs. 1 and 3, the said member is cut away or concaved at (1*, between the projection d and the swell D, the inner surface of the swell being shapedto present an inclined impactface 6 and a shorter binding-face 7. The finger h is held against the back of the member D by the spring H and normally the inner end of said member is held by such spring against the back plate B, as Shown in Fig. 2, at such time the impact-face 6 of the swell being in the path of the incoming Shuttle.

The binder member E is herein shown as a casting consisting of a longitudinal web 6 and upper and lower ribs 6 e projecting from its inner face, the outer end of the rib 6' having an apertured extension 6 above a horizonal ear e on the web, said ear being also apertured to receive the sleeve 0 on 5 e e of the member E,while the free inner end of the latter enters the concave portion dz of the member D, as shown in Figs. 1 and A strong spring S is coiled about the depending stud 12 one end of the spring bearing against the rear face of the member E at or near its free end, and the other end of the spring extends behind the tongue d, the Winding being such that the spring presses the convex face 8 of the memberE into the shuttle-path, such inward movement of the member being limited by a downturned lug or stop e on a horizontal projection e,forming a part of the casting E. The stop bears against the back of the lay and the projection 6 passes through the notch or recess (Z in the bottom edge of the member D.

Supposing the parts are in the position shown in Fig. 1, when the shuttle enters the shuttle-box its shoulder strikes the impactface 6 of the primary binder D, throwing said binder outward against the action of spring H and operating the protector mechanism and also serving to partly check the shuttle. The force of the blow depends upon the shuttle speed, and as the primary binder swings outward the tongue d acts to increase the tension of the spring S proportionally to the shuttle speed. The farther out the binder D is thrown the greater the tension of the spring S and the harder will the latter'bear upon the secondary binder E, so that when it is engaged by the shuttle as it reaches the inner end of the box the checking action of the secondary binder will be properly proportioned, and the shuttle will be brought to a full stop in proper position.

- Referring to Fig. 3, it will be seen that when the shuttle M engages and moves the secondary binder outward the inner end of the latter will bring up against the primary binder D, so that the spring H will be brought into action to assist in the final checking. Thus the binders act successively upon the shuttle and the speed of the entering shuttle acts upon the primary binder to automatically set the spring controlling the secondary binder so that the latter will act with the degree of force corresponding to the shuttle speed.

My invention is not restricted to the precise construction and arrangement shown and described, as the same may be changed or modified in various particulars without departing from the spirit and scope of the invention.

By loosening the nut 55 and inserting a pin in the hole a of the base of the hub c the latter can be turned to a greater or less extent, and thereby adjust with great nicety the fulcrum of the two checking members D and E to take up wear of the said members, in usual manner, and the sleeve 0 is loosely mounted on the hub to reduce the friction of the parts.

It is feasible in the use of this checking mechanism to make the spring I-I lighter than is usual in looms Where it is relied upon to give all or the greater part of the checking pressure, because with the present mechanism the spring S exerts the main checking pressure, and hence the spring H need only be sufficiently strong to efficiently control the protector-shaft and dagger. By thus making the spring H comparatively light the outward movement of the primary hinder D can be largely expended in increasing the tension of the spring S Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a shuttle checking mechanism for looms, primary and secondary checking members, a controlling-springfor the latter, operatively connected with the primary member, movement of said member by impact of the shuttle increasing the tension of said spring proportionally to the force of the blow before engagement of the shuttle with the secondary checking member.

2. In shuttle-checkin g mechanism for looms, a binder, a controlling-spring therefor, and means governed by or through the shuttle on eacliincoming pick thereof to automatically adj ust'the tension of the spring in proportion to the shnttlespeed prior to engagement of the shuttle and binder.

3. In shuttle-checking mechanism for looms, a binder, a controlling-spring therefor, means actuated by impact of the shuttle to vary the tension of the spring proportionally to the shuttle speed prior to engagement of the shut tle and binder, and protector mechanism governed by or through said means.

4. In shuttle-checkin g mechanism for looms, primary and secondary binders, a controlling spring for each, and a connection between the primary binder and. the secondary-binder spring, to automatically adjust the tension of said spring in proportion to the force with which the shuttle engages the primary binder.

5. In shuttle-checking mechanism forlooms, primary and secondary binders normally in the path of the shuttle, a controlling-spring for each binder, stops to limit inward movement of the binders, and a connection between the primary binder and the spring of the secondary binder, to adjust the tension of said spring proportionally to the force with which the shuttle engages the primary binder.

6. In shuttle-checking mechanism for looms, two binder members arranged in tandem, to successively engage the shuttle, a controllingspring for the outermost member, and a connection between said spring and the innermost binder member, to set the tension of said spring, prior to engagement of its member with the shuttle, in proportion to the force with which the shuttle strikes the innermost of the binder members.

7. In shuttle-checking mechanism for looms, two binder members,acommon fulcrum therefor, means to adjust the fulcrum, a spring controlling one of said binder members, and a connection between the other member and the spring, to adjust the tension of the lat- 9. In shuttle-checking mechanism for looms, the combination of successively-acting binders each pivoted to the lay, and a separate pressure-producing spring for each binder.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CLARE H. DRAPER.

Witnesses:

GEORGE OTIS DRAPER, ERNEST WARREN W001). 

